Power module

Abstract

A power module includes two power input terminals, two main substrates, a plurality of first switches, a plurality of second switches, and a bridge main unit. The bridge main unit is across the two main substrates, and includes a first bridge subunit and a second bridge subunit. Each of the first bridge subunit and the second bridge subunit includes a first conducting region on a bottom surface, and a second conducting region and a third conducting region on a top surface. The first conducting region transmits a current signal of a current path of a switch circuit formed by the power input terminals, the first switches, and the second switches. The second conducting region is connected to the control terminals of the first switches and the second switches. The third conducting region is connected to the output terminals of the first switches and the second switches.

What is claimed is: 
     
       1. A power module, comprising:
 a first power input terminal, comprising a plurality of first connection ports; 
 a second power input terminal, comprising a plurality of second connection ports; 
 a first main substrate, comprising a first surface; 
 a second main substrate, comprising a second surface; 
 a plurality of first switches, each of the first switches comprising a first control terminal, a first input terminal, and a first output terminal; 
 a plurality of second switches, each of the second switches comprising a second control terminal, a second input terminal, and a second output terminal; and 
 a bridge main unit across the first surface and the second surface, wherein the bridge main unit comprises at least one first bridge subunit and at least one second bridge subunit; each of the first bridge subunit and the second bridge subunit comprises a bottom surface, a top surface opposite to the bottom surface, a first conducting region, a second conducting region, and a third conducting region; the bottom surface faces the first surface and the second surface; the first conducting region is on the bottom surface; the second conducting region and the third conducting region are on the top surface; 
 wherein, the first conducting region of the at least one first bridge subunit is connected between the first output terminals of the first switches and the second input terminals of the second switches; the first conducting region of the at least one second bridge subunit is connected between the first input terminals of the first switches and the first power input terminal or between the second output terminals of the second switches and the second power input terminal, so as to transmit current signals between the first power input terminal, the first switches, the second switches, and the second power input terminal; 
 wherein, the second conducting regions of the at least one first bridge subunit and the at least one second bridge subunit are connected to the first control terminals of the first switches and the second control terminals of the second switches, so as to transmit control signals of the first switches and the second switches; and 
 wherein, the third conducting regions of the at least one first bridge subunit and the at least one second bridge subunit are connected to the first output terminals of the first switches and the second output terminals of the second switches, so as to transmit output signals of the first switches and the second switches. 
 
     
     
       2. The power module according to  claim 1 , wherein the first connection ports and the second connection ports are arranged alternately in pairs on the first surface of the first main substrate or the second surface of the second main substrate in a direction parallel to short edges of the first main substrate and the second main substrate. 
     
     
       3. The power module according to  claim 1 , wherein the at least one first bridge subunit and the at least one second bridge subunit are arranged in a direction parallel to short edges of the first main substrate and the second main substrate. 
     
     
       4. The power module according to  claim 1 , wherein the first main substrate further comprises a first mounting main region on the first surface, the second main substrate further comprises a second mounting main region on the second surface, the first input terminals of the first switches are connected to the first mounting main region, and the second input terminals of the second switches are connected to the second mounting main region. 
     
     
       5. The power module according to  claim 4 , wherein the first main substrate further comprises a first power main region on the first surface, the first power main region comprises at least one first power subregion connected to the first output terminals of the first switches, and two sides of the first conducting region of the at least one first bridge subunit are connected to the at least one first power subregion and the second mounting main region respectively. 
     
     
       6. The power module according to  claim 5 , wherein the at least one first power subregion is close to the first mounting main region. 
     
     
       7. The power module according to  claim 5 , the power module further comprises two power output terminals, wherein when the first conducting region of the at least one second bridge subunit is connected between the first input terminals of the first switches and the first power input terminal, the two power output terminals are connected to the at least one first power subregion of the first power main region. 
     
     
       8. The power module according to  claim 5 , wherein the second main substrate further comprises a second power main region on the second surface, and the second power main region comprises at least one second power subregion connected to the second output terminals of the second switches and the second power input terminal. 
     
     
       9. The power module according to  claim 8 , wherein the at least one second power subregion is close to the second mounting main region. 
     
     
       10. The power module according to  claim 8 , wherein when the first conducting region of the at least one second bridge subunit is connected between the first input terminals of the first switches and the first power input terminal, the second power main region comprises at least one third power subregion connected to the first connection ports of the first power input terminal, and two sides of the first conducting region of the at least one second bridge subunit are connected to the first mounting main region and the at least one third power subregion respectively. 
     
     
       11. The power module according to  claim 10 , wherein the at least one third power subregion surrounds the second mounting main region and the at least one second power subregion, so as to form an open loop with a notch, and the bridge main unit is close to the notch. 
     
     
       12. The power module according to  claim 10 , wherein the at least one second power subregion has a plurality of first connection regions for the second connection ports of the second power input terminal to connect, the at least one third power subregion has a plurality of second connection regions for the first connection ports of the first power input terminal to connect, and the first connection regions and the second connection regions are arranged alternately in pairs on the second surface of the second main substrate in a direction parallel to short edges of the first main substrate and the second main substrate. 
     
     
       13. The power module according to  claim 8 , wherein when the first conducting region of the at least one second bridge subunit is connected between the second output terminals of the second switches and the second power input terminal, the at least one second power subregion of the second power main region is connected to the second output terminals of the second switches, the first power main region comprises at least one fourth power subregion connected to the second connection ports of the second power input terminal, and two sides of the first conducting region of the at least one second bridge subunit are connected to the at least one second power subregion and the at least one fourth power subregion respectively. 
     
     
       14. The power module according to  claim 13 , wherein the at least one fourth power subregion is close to the at least one first power subregion. 
     
     
       15. The power module according to  claim 13 , wherein the first mounting main region has a plurality of third connection regions for the first connection ports of the first power input terminal to connect, the at least one fourth power subregion has a plurality of fourth connection regions for the second connection ports of the second power input terminal to connect, and the third connection regions and the fourth connection regions are arranged alternately in pairs on the first surface of the first main substrate in a direction parallel to short edges of the first main substrate and the second main substrate. 
     
     
       16. The power module according to  claim 8 , further comprising two power output terminals, wherein when the first conducting region of the at least one second bridge subunit is connected between the second input terminals of the second switches and the second power input terminal, the two power output terminals are connected to the second mounting main region. 
     
     
       17. The power module according to  claim 16 , wherein the second power main region comprises at least one fifth power subregion, the two power output terminals are connected to the at least one fifth power subregion, and the at least one fifth power subregion is connected to the second mounting main region. 
     
     
       18. The power module according to  claim 17 , wherein at least one fifth power subregion is close to the at least one second power subregion. 
     
     
       19. The power module according to  claim 1 , wherein the first main substrate further comprises a first control main region on the first surface, the second main substrate further comprises a second control main region on the second surface, the first control terminals of the first switches are connected to the first control main region, the second control terminals of the second switches are connected to the second control main region, and the first control main region and the second control main region are connected to the second conducting regions of the at least one first bridge subunit and the at least one second bridge subunit. 
     
     
       20. The power module according to  claim 1 , wherein the first main substrate further comprises a first detection main region on the first surface, the second main substrate further comprises a second detection main region on the second surface, the first output terminals of the first switches are connected to the first detection main region, the second output terminals of the second switches are connected to the second detection main region, and the first detection main region and the second detection main region are connected to the third conducting regions of the at least one first bridge subunit and the at least one second bridge subunit.